T

transactional-outbox

Kotlin/Java 21 trading wallet on Spring Boot (Web MVC, Security JWT, Data JPA/Hibernate, Bean Validation). Reserves funds under a row lock, rejects stale order edits, and publishes order events through a transactional outbox. Duplicate retries stay idempotent. PostgreSQL, Flyway, Redis, Kafka. Tests: JUnit 5, MockK, Google Truth, Testcontainers.

ASP.NET Core .NET 10 Web API demonstrating asynchronous messaging with RabbitMQ and MassTransit, including Product CRUD, event-driven communication, consumers, shared contracts, Entity Framework Core, and the Outbox pattern.

Active prototype for sovereign AI processing in KRITIS healthcare. 30 ADRs covering transactional outbox with publish fencing, async DB runtime, semantic chunking, and BSI audit ledger preparation.

Cloud-native, event-driven Node.js/TypeScript backend platform: transactional outbox, multi-device offline-first sync, idempotent health data ingestion, AI/ML and comprehensive observability